<template>
  <div id="root">
    <div class="todo-container">
      <div class="todo-wrap">
        <MyHeader :addTodo="addTodo"/>
        <MyList :todos="todos" :checkTodo="checkTodo" :deleteTodo="deleteTodo"/>
        <MyFooter :todos="todos" :checkAllTodo="checkAllTodo" :clearAllDoneTodos="clearAllDoneTodos"/>
      </div>
    </div>
  </div>
</template>

<script>

	import MyHeader from "./components/MyHeader";
	import MyList from "./components/MyList";
	import MyFooter from "./components/MyFooter";

	export default {
		name: 'App',
		components: {
			MyHeader,
			MyList,
			MyFooter
		},
		data() {
			return {
				todos: [
					{
						id: '001',
						title: '吃饭',
						done: true
					},
					{
						id: '002',
						title: '睡觉',
						done: false
					},
					{
						id: '003',
						title: '喝酒',
						done: true
					},
				]
			}
		},
    methods: {
			addTodo(x) {
				console.log('我是App组件，我收到数据了', x);
				this.todos.unshift(x);
			},

			/**
       * 勾选 todo项
			 * @param id
			 */
			checkTodo(id) {
				this.todos.forEach(item => {
					if (item.id === id) {
						item.done = !item.done;
          }
        });
				console.log(id);
			},

			/**
       * 删除一个id
			 * @param id
			 */
			deleteTodo(id) {
				this.todos = this.todos.filter((todo) => {
					return todo.id !== id;
        })
      },

      // 全选或者取消全选
      checkAllTodo(done) {
				this.todos.forEach(todo => {
					todo.done = done;
        })
      },

      // 清除已经完成的todo
      clearAllDoneTodos() {
				this.todos = this.todos.filter(item => {
					return !item.done;
        })
      }
    }
	}
</script>

<style>
  /*base*/
  body {
    background: #fff;
  }

  .btn {
    display: inline-block;
    padding: 4px 12px;
    margin-bottom: 0;
    font-size: 14px;
    line-height: 20px;
    text-align: center;
    vertical-align: middle;
    cursor: pointer;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
    border-radius: 4px;
  }

  .btn-danger {
    color: #fff;
    background-color: #da4f49;
    border: 1px solid #bd362f;
  }

  .btn-danger:hover {
    color: #fff;
    background-color: #bd362f;
  }

  .btn:focus {
    outline: none;
  }

  .todo-container {
    width: 600px;
    margin: 0 auto;
  }

  .todo-container .todo-wrap {
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
  }

</style>
